dividing 1/3 problem

Hi,

I've got a problem with dividing, I need to divide 1 USD per 3 people. Each of them will receive 0.33USD, but I want to split whole amount, to add extra 0,01USD to someone, or take this one cent if I want to split 2USD per 3 people.

How can I split some amount into almost equal parts?

I guess, that pricing can do it (I saw once 0,33 0,33 0,34), but I don't know how to put there a fraction.